Car-seat movement.



No. 731,204. PATENTED JUNE 16, 1903.

E. MOKAIG. CAE SEAT MOVEMENT.

APPLIoATIoN FILED MAB.; a. 1902.

No MODEL.

/JZEEEEE* Y F Z VEZ@ No. y731,204.

UNITED STATES- EDDY THOMAS MOKAIG,

Patented June 16, 1903.

OE OHIOAGO, ILLINOIS;

CAR-SEAT MOVEMENTI v sPEoIFIoATI'oN forming part of .Letters Patent No. 731,204, dated ,fune 16, 1903.

Application filed March 3, 1902.

To all whom, it may concern,.-

Beit known that I, EDDY THOMAS MOKAIG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements vin Car-Seat Movements, of which the following is a full, clear, and exact specification.

My invention relates to movements for pivotally supporting and adjusting the backs of car-seats; and it has for its primary Object to provide a simple, inexpensive, noiseless, and efficient movement which will hold the back rigid when in place for use and will tip the back tothe desired angle when the ,latter is thrown or shifted from side to side.

With these ends in view my invention consists in certain featuresof noveltyin the construction, combination, and arrangement of parts by which thesaid objects and certain otherobjects hereinafter appearing are attained, all as fully described with reference to the accompanying drawings, and more particularly pointed out in the claims.

In the said drawings, Figure lis an end elevation of a seat-frame member, showing myimproved movement applied thereto, also showing the position of the back and seat cushion in dotted lines; and Fig. 2 is an enf larged longitudinal sect-ional view taken on the line 2 2, Fig. l.

1 represents one of the end frame mem` bers of a car-seat, which may be of any suitable construction and design, and 2 is the arm to which the back 3 is usually secured.

Rigidly attached to the frame member 1 at an intermediate or central point is a drum or wheel 4, and rigidly secured to the arm 2 at a point near its lower end is a similardrum or wheel 5, and these two drums or wheels are connected together in such a manner that when the arm 2 is oscillated or moved around the center of the wheel 4 the -wheel or drum 5 will'be turned on its independent axis in the opposite direction, In order to accomplish this, I connect the center of the wheel 4 to the center of the wheel 5 by means of an arm 6, `p ivoted by bolt or pivot 7to the wheel 4 and by similar bolt or pivot 8 to the Wheel 5, and I pass around the wheels 4 5 a sprocketchain, belt, steel band, or other similar connection 9, which is secured to both wheels 4,

Serial No. 96,52%. (No model.)

5 in sucha manner that it may partiallywind or unwind thereon withoutslipping relatively thereto.. This attachment may be accomplished by providing the lower wheel 4 with a tooth Or lug 10, which engages between the links of the belt 9 if the same be a sprocket chain or in any suitable aperture in said belt if the latter bea steel band orsimilarconnection, and I provide the wheel 5 with a similar lug or p in 1l, which is similarly connected to the band or belt 9. The back-arm 2 being thus supported by the pivoted link or arm 6 concentrically with wheel 4 and the wheel 5 on the back member being of larger diameter than wheel 4, it will be understood that as .said back-arm is shiftedfrom side to side in the act of changing the reversing direction of the seat the wheel 5 will be compelled to turn in the reverse direction, and hence the back will be set up on the opposite side at the desired angle of inclination, such angle being in direct proportion to the difference between the sizes of the two wheels or rotary members 4 5 and decreasing or becoming Inore perpendicular as the size of wheel 5 is decreased. Thus when the arm 2 falls into line with a straight line passing through the centers 7 8 and the arm 6 is in avertical position further movement toward the left will cause the upper end of arm 2 to oscillate toward the right, and consequently set the back up Aat the desired angle of inclination, as shown in dotted lines in Fig. 1, or if the movement be continued toward the right the upper end of the arm 2 will oscillate toward the left for attaining such angle.

In order that the back-arm 2 may be rigidly supported without depending upon the belt 9 or subjecting the same to undue strain, the lower end of the back-arm-2 is continued downwardly past the wheel 5 in the form of an extension l2 and the frame member 1 is provided on each side with a pair of lugs 13, constituting a seat or socket into which the extension 12 drops as the arm 2 comes over, thus holding the arm 2 by means of the arm 6 and the lugs 13.

The arm 6 is provided with a surrounding ange 14, which encompasses the wheels 4 5 and prevents the band or belt 9 from slipping olf on the inner side, while said band is prevented from slipping off on the outer side by IOO means of flanges 15, formed on the wheels 4 5 themselves.

The lower end of the arm 6 may be provided with a lateral lug or finger 16, adapted to engage in the usual yoke 17, carried on the under side of the seat-cushion frame 18 for shifting said seat-cushion in the proper direction, as will be understood.

In order that the belt or band 9 may be tightened for taking up slack or lost motion, I provide the arm G with any suitable means for this purpose. In the drawings I have shown two slides 19, having hooks or lugs 20,

' engaging over the folds of the belt 9 and provided with studs 21, secured in transverse slots 22 in the arm 6 by means of nuts 23.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. In a car-seat movement the combination with a back-supporting member and a frame member to which said back-supporting member is pivotally connected, of two curved members secu red to said first members respec tively, and an operative connection extending from one of said curved members to the other and at a tangent to both whereby bodily movement of one will also result in a rotary movement thereof, substantially as set forth.

2. In a car-seat movement the combination with a back-supporting member and a frame member upon which said back-supporting member is pivotally supported, and movable bodily, and an independent axis on which said back-supporting member is also movable, of two curved members secured to said first members respectively and an operativefiexible connection between said curved members whereby the oscillation of said back member in one direction -will cause it to also oscillate on anindependent axis in the opposite direction, substantially as set forth.

3. In a car-seat movement the combination with a back-supporting member and a frame member with reference t-o which said back.

member is movable bodily, and an independent axis on which said back-supporting member is also movable, of drums on said members respectively, a flexible connection passing around said drums and secured thereto and means pivotally connecting said back member and frame member together,substan tially as set forth.

4. In a car-seat movement the combination with a back member and a frame member, of an oscillatory arm to which both of said members are pivotally connected and a continuous fiexible connection having operative connection with both said frame member and back member, substantiallyv as set forth.

5. In a car-seat movement the combination with a frame member and a back member, of an oscillatory arm to which both of said members are pivotally connected, curved members secured to said back member and frame member respectively concentrically with the pivots of said arm and a flexible connection passing around said curved members and connecting them together, substantially as set forth.

6. In a car-seat movement the combination with a frame member and a back member having pivotal support thereon so as to oscillate and also move bodily with reference thereto, of a flexible connection secured to said frame member, and a curved member on said back member also connected to said flexible member, substantially as set forth.

7. In a car-seat movement the combination with a 'back member and a frame member, said back member being pivotally supported on said frame member so as to oscillate and also move bodily with reference thereto, of curved members secured to said back member and frame member respectively, a fiexible connection operatively connecting said curved members, and means for locking said back member at the limit of its stroke independently of said flexible connection, substantially as set forth. I

S. In a car-seat movement the combination with a back member and a frame member, of an oscillatory arm to which both of said members are pivotally connected supporting said back member on said frame member, two curved members secured respectively to said frame member and back member, a flexible connection passing around said curved members, an extension on said back member and sockets on opposite sides of said frame member for receiving the end of said extension, substantially as set forth.

9. In a car-seat movement the combination with a frame member and a back member pivotally supported on said frame member so as to oscillate and move bodily with reference thereto, of a curved member secured to said frame member, a curved member of larger diameter'than said first curved member secured to said back member and a flexible connection passing around and being secured to said curved members, substantially as set forth.

10. In a car-seat movement the combination with a frame member and a back member supported on said frame member and movable bodily from side to side of the frame member, around one axis, and movable pivotally on a higher and different axis, of a curved member secured to said frame member, a curved member of larger diameter than said first` curved member secu red'to said back member and an operative connection extending from one of said curved members to the other at a tangent to both whereby the oscillation of said back member will impart a rotary movement to the larger one of said curved members, substantially as set forth.

` EDDY THOMAS MCKAIG.

Witnesses:

EDNA B. JoHNsoN, F. A. HOPKINS.

IIO 

